Also I wonder if I'm the only one here who feels that their mind takes some 2/3 of the day to get into high gear?.It's probably more about emotional balance than cognitive functions, but I feel like I'm best able to focus only from late afternoon onward, making late night the only time that's useful for anything.
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[0] - I tried all kinds of things. Music blaring from the speakers at 06:30 sharp? Within a week, I've mastered getting up, hitting the power button on the amplifier, and falling back to bed in one, smooth move, with ballet-like fluidity. Got an alarm clock that requires you to solve math problems to turn it off? I quickly realized I must've mastered the art of multiplying 2-digit numbers in memory while unconscious, because I would wake up at 11:00 to discover multiple such alarms disabled, with no memory of doing it, or even hearing them ring.
[1] - Yes, that means business trips are especially hard for me. When traveling alone, I rely on wake-up calls from my wife (and check-ups afterward). Even with that, I still almost missed a plane once.
[2] - Except when there's an important appointment coming up that we need to get up unusually early for - on those nights, they're near-impossible to wake up.